private static MutableString PrepareReadBuffer(RubyIO/*!*/ io, MutableString buffer) {
if (buffer == null) {
buffer = MutableString.CreateBinary();
} else {
buffer.Clear();
}
#if TODO
var internalEncoding = io.InternalEncoding ?? io.ExternalEncoding;
if (buffer != null) {
buffer.Clear();
buffer.ForceEncoding(internalEncoding);
} else if (io.ExternalEncoding == RubyEncoding.Binary && internalEncoding == RubyEncoding.Binary) {
buffer = MutableString.CreateBinary();
} else {
buffer = MutableString.CreateMutable(internalEncoding);
}
#endif
return buffer;
}
public static MutableString/*!*/ ForceEncoding(MutableString/*!*/ self, [NotNull]RubyEncoding/*!*/ encoding) {
self.ForceEncoding(encoding);
return self;
}